"Cuprous" is an archaic term for what today is called copper (I), Cu+1.
Its Valency = 2the formula being CuOThe copper donates two electrons to the oxygen and forms one ionic bond.Added:There are two copper oxides, differing in color:if it is black powder, then it is copper(II) oxide CuO (cupric, more common, as in the mineral 'tenoriet')if it is red powder, then it is copper(I) oxide Cu2O (cuprous oxide, as in mineral the 'cupriet' and it occurs in 'Benedict's test' on reducing sugars)
The correct spelling is 'cuprous', and means copper-conatining. Some cuprous metals are, copper (obviously), brass, and bronze
valency of lithium - 1
valency of Rf =4 valency of Db=5 valency of Sg=6 valency of Bh=7 valency of Hs=8 valency of Mt=unknown
NOT +2Added:In Cu2O the ion charge is Cu1+, (cuprous oxide, Cu(I) oxide, oxidation state +1) color brownish red (or yellow, depending on how fine the particles are) In CuO the ion charge is Cu2+, (cuprous oxide, Cu(II) oxide, oxidation state +2) color black
Its Valency = 2the formula being CuOThe copper donates two electrons to the oxygen and forms one ionic bond.Added:There are two copper oxides, differing in color:if it is black powder, then it is copper(II) oxide CuO (cupric, more common, as in the mineral 'tenoriet')if it is red powder, then it is copper(I) oxide Cu2O (cuprous oxide, as in mineral the 'cupriet' and it occurs in 'Benedict's test' on reducing sugars)
Copper want to give up it's valence electrons, therefore it is a positive cation when ionized. Answers appear to be 1+ and 2+. Typically metals have positive ions. The charge of copper can be determined by evaluating the anion charge(s) and then solving the cation side.
The cuprous sulfide - Cu2S - is black.
The correct spelling is 'cuprous', and means copper-conatining. Some cuprous metals are, copper (obviously), brass, and bronze
Cuprous oxide or copper I oxide is Cu2O
a cuprous ion has 28 electrons.
The charge on cuprous ion is +2. It is written as Cu2+.
valency of lithium - 1
valency of Rf =4 valency of Db=5 valency of Sg=6 valency of Bh=7 valency of Hs=8 valency of Mt=unknown
-1 valency
I think cuprous oxide has a charge of 1+, while cupric oxide has a charge of 2+. Cupric oxide is also more stable than cuprous oxide.
NOT +2Added:In Cu2O the ion charge is Cu1+, (cuprous oxide, Cu(I) oxide, oxidation state +1) color brownish red (or yellow, depending on how fine the particles are) In CuO the ion charge is Cu2+, (cuprous oxide, Cu(II) oxide, oxidation state +2) color black